Diaspore is a mineral composed of aluminum oxide hydroxide, often found in metamorphic rocks. It typically appears as colorless, yellow, or brown crystals and has a vitreous to pearly luster. Diaspore is known for its unique property of changing color when heated, which makes it interesting for collectors and gem enthusiasts. This mineral is primarily sourced from regions with significant geological activity, such as Turkey and Hungary. Diaspore is also used in various industrial applications, including the production of aluminum and as a refractory material due to its high melting point and thermal stability.